In this paper authors analyze technical and cost efficiency gains from transition from divided balancing model to the common regional balancing market model with centralized balance management. The paper analyses key performance indicators of balancing system, as well as discusses balance responsible parties' (BRPs) incentives to keep their portfolios in balance. Due to rather small sample of statistical data from the Baltic market, we simulate conditions of the common regional balancing market and conclude that it is hard for BRPs to predict the system's imbalance direction, therefore BRPs are incentivized to stay in balance at all times in order to minimize imbalance and balancing costs. Analysis of key performance indicators show that the centralized regional balance management and regionally harmonized balancing market with the single price model delivers more accurate, more efficient system balance management.